# -*- coding: utf-8 -*-
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.dates as mdate
import pandas as pd
 
plt.rcParams['font.sans-serif']=['SimHei']#用来正常显示中文标签
plt.rcParams['axes.unicode_minus']=False#用来正常显示负号
 
date=pd.date_range('2018-09-03','2018-09-06')
y1=[0.9143,0.9293,0.9348,0.9327]
y2=[0.9143,0.9294,0.9348,0.9327]
 
fig = plt.figure(figsize=(15,10))
ax = fig.add_subplot(1,1,1)
ax.xaxis.set_major_formatter(mdate.DateFormatter('%Y%m%d'))#设置时间标签显示格式
ax.xaxis.set_major_locator(mdate.DayLocator())
ax.set_title("y plot")
ax.plot(date, y1, 'go-', label=u'这是y1')
ax.plot(date, y2, 'yo-', label=u'这是y2')
plt.xticks(rotation=45)#旋转45度显示
legend = ax.legend(loc='lower center', shadow=False)
